YI 4pc Home Camera, 1080p Wireless IP Security Surveillance System with Night Vision, Baby Monitor on iOS, Android App - Cloud Service Available 24/7 Full HD Recording - F/2.0 aperture, 112 wide-angle lens, 1080p/15fps to capture moments with clear picture. Features two-way audio to allow you to receive and transmit audio from any location with a WiFi connection Enhanced Night Vision - 8 individual 940nm infrared LED's, which automatically turns on infrared (IR) in low light conditions, allowing you to see clearly in the dark Activity Alerts - Baby Crying Detection and Motion Detection features use state-of-the-art technology to detect and send notifications to your phone. Activity Alerts (7-day storage in YI Cloud) available free of charge without a microSD memory card or a YI Cloud subscription YI Home App - Acess your camera with our mobile APP anytime and anywhere. Allows sharing your camera with up to 5 family members or friends, and view multiple cameras on a single account Cloud Storage - Supports YI Cloud to avoid the risk of losing footage from a microSD memory card, and ensures all recorded video is safe, secure, and protected with the most efficient compression and highest protection of data. Local backup supports up to 32GB Class10 microSD cards with FAT32 format